Whenever you cast a spell with a squirrel in its art, you get {A} (an acorn counter). Whenever a Squirrel you control enters the battlefield or dies, you get {A}. {2}{B}, Pay X {A}: Target creature gets -X/-X until end of turn. {G}, Pay X {A}: Target creature gets +X/+X until end of turn.

When Burglar Rat enters the battlefield, each opponent discards a card.

When Chittering Witch enters the battlefield, create a number of 1/1 black Rat creature tokens equal to the number of opponents you have. {1}{B}, Sacrifice a creature: Target creature gets -2/-2 until end of turn.

{X}: Crypt Rats deals X damage to each creature and each player. Spend only black mana on X.

This spell has flash as long as you control a permanent with flash. As an additional cost to cast this spell, sacrifice a creature. Destroy target creature.

When Nested Shambler dies, create X tapped 1/1 green Squirrel creature tokens, where X is Nested Shambler's power.

Whenever another nontoken creature dies, you may create a 1/1 black Rat creature token. Rats you control have deathtouch.

Pack Rat's power and toughness are each equal to the number of Rats you control. {2}{B}, Discard a card: Create a token that's a copy of Pack Rat.

Rats you control have menace. {1}{B}, {T}: Create a 1/1 black Rat creature token. {2}{B}{B}, {T}, Sacrifice three Rats: Gain control of target creature.

{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature. You add {B}{B} and draw a card.

Rat Colony gets +1/+0 for each other Rat you control. A deck can have any number of cards named Rat Colony.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) At the beginning of your upkeep, you may search your library for a Rat card, reveal it, put it into your hand, then shuffle.

Whenever you sacrifice an artifact or creature, put a +1/+1 counter on Ravenous Squirrel. {1}{B}{G}, Sacrifice an artifact or creature: You gain 1 life and draw a card.

As an additional cost to cast this spell, sacrifice a creature or pay {3}{B}. Destroy target creature or planeswalker.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

When Underworld Hermit enters the battlefield, create a number of 1/1 green Squirrel creature tokens equal to your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

As an additional cost to cast this spell, sacrifice a creature. Draw two cards.

Whenever you cast a creature spell, draw a card.

Create a 1/1 green Squirrel creature token. Flashback {1}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create a 1/1 green Squirrel creature token. Storm (When you cast this spell, copy it for each spell cast before it this turn.)

At the beginning of your upkeep, you may sacrifice a token. If you do, put an acorn counter on Chitterspitter. Squirrels you control get +1/+1 for each acorn counter on Chitterspitter. {G}, {T}: Create a 1/1 green Squirrel creature token.

Vanishing 3 (This creature enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.) When Deep Forest Hermit enters the battlefield, create four 1/1 green Squirrel creature tokens. Squirrels you control get +1/+1.

Squirrellink (Damage dealt by this creature also causes you to create that many 1/1 green Squirrel creature tokens.) Creature tokens you control are Squirrels in addition to their other creature types. Other Squirrels you control get +1/+1.

Creatures you control get +3/+3 and gain trample until end of turn.

Until end of turn, target creature you control becomes a green Wurm with base power and toughness 6/4. Overload {4}{G}{G} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Reach Scurrid Colony gets +2/+2 as long as you control eight or more lands.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever one or more +1/+1 counters are put on Scurry Oak, you may create a 1/1 green Squirrel creature token.

When Squirrel Dealer enters the battlefield, ask a person outside the game "Do you like Squirrels?" If they do, create a 1/1 green Squirrel creature token.

{1}{G}: Reveal a card in your hand, covering the artist credit. Target opponent guesses the artist. If they guess wrong, create a 1/1 green Squirrel creature token.

Squirrel Mob gets +1/+1 for each other Squirrel on the battlefield.

Enchant land Enchanted land has "{T}: Create a 1/1 green Squirrel creature token."

When Squirrel Sanctuary enters the battlefield, create a 1/1 green Squirrel creature token. Whenever a nontoken creature you control dies, you may pay {1}. If you do, return Squirrel Sanctuary to its owner's hand.

Other Squirrels you control get +1/+1.

This spell can't be countered. Indestructible Toski, Bearer of Secrets attacks each combat if able. Whenever a creature you control deals combat damage to a player, draw a card.

({T}: Add {G}.)

{T}: Add {C}. {2}{B}{G}, {T}, Sacrifice a creature: Draw a card.

({T}: Add {B}.)